Home Page, Concealed Overhead Track Door Closers Hydraulic Swing Door Operators are an effective means of providing automatic door operation without compromising safety or user convenience. Swing Door Operators feature programmable safety features, and enable the provision of automatic door operation to existing swing doors. Used in hospitals, sterile environments and in situations where sliding or revolving doors are not a practical option, the Swing Door Operator is fire rated. Swing door operators can be retro-fitted to most existing doors. Above all else the Swing Door Operators provide convenience and ease of access.